U.S. patent number 10,593,746 [Application Number 15/749,438] was granted by the patent office on 2020-03-17 for spliced display device.
This patent grant is currently assigned to WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.. The grantee listed for this patent is Wuhan China Star Optoelectronics Technology Co., Ltd.. Invention is credited to Yuejun Tang.
United States Patent |
10,593,746 |
Tang |
March 17, 2020 |
Spliced display device
Abstract
The spliced display device comprising a plurality of display
panels stitched to each other, and each of display panels has
display region and non-display region. The spliced display device
comprises at least one first display panel and at least one second
display panel. An end of first display is backwardly bended away
display surface at boundary between display region and non-display
region. An end of second display panel is adjacent to first display
panel and end of second display panel facing and correspondingly
fixed to non-display region of first display panel after been
bended. The spliced display device provides at least one
non-display region is bended and stitched to other display panel.
It closing the distant between the display regions of two adjacent
display panels, and achieves to narrow down or even eliminates seam
of spliced display device, and improve sense of segmental image
vision.
Inventors: |
Tang; Yuejun (Hubei,
CN) |
Applicant: |
Name |
City |
State |
Country |
Type |
Wuhan China Star Optoelectronics Technology Co., Ltd. |
Wuhan, Hubei |
N/A |
CN |
|
|
Assignee: |
WUHAN CHINA STAR OPTOELECTRONICS
TECHNOLOGY CO., LTD. (Wuhan, CN)
|
Family
ID: |
66244388 |
Appl.
No.: |
15/749,438 |
Filed: |
December 19, 2017 |
PCT
Filed: |
December 19, 2017 |
PCT No.: |
PCT/CN2017/117236 |
371(c)(1),(2),(4) Date: |
January 31, 2018 |
PCT
Pub. No.: |
WO2019/085195 |
PCT
Pub. Date: |
May 09, 2019 |
Prior Publication Data
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|
|
|
Document
Identifier |
Publication Date |
|
US 20190131381 A1 |
May 2, 2019 |
|
Foreign Application Priority Data
|
|
|
|
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Oct 30, 2017 [CN] |
|
|
2017 1 1035118 |
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01L
27/3293 (20130101); H01L 2251/5338 (20130101); H01L
51/0097 (20130101) |
Current International
Class: |
H01L
27/32 (20060101); H01L 51/00 (20060101) |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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103578371 |
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Feb 2014 |
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CN |
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103676237 |
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Mar 2014 |
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CN |
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104269428 |
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Jan 2015 |
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CN |
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104318864 |
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Jan 2015 |
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CN |
|
104407465 |
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Mar 2015 |
|
CN |
|
104766545 |
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Jul 2015 |
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CN |
|
105209967 |
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Dec 2015 |
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CN |
|
105976718 |
|
Sep 2016 |
|
CN |
|
106782132 |
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May 2017 |
|
CN |
|
Primary Examiner: Menz; Douglas M
Attorney, Agent or Firm: Hemisphere Law, PLLC Ma;
Zhigang
Claims
What is claimed is:
1. A spliced display device, comprising a plurality of display
panels stitched to each other, and each of the display panels has a
display region and a non-display region; wherein the spliced
display device comprises at least one first display panel and at
least one second display panel, an end of the first display is
backwardly bended away display surface at a boundary between the
display region and the non-display region, and an end of the second
display panel is adjacent to the first display panel, and the end
of the second display panel facing and correspondingly fixed to the
non-display region of the first display panel after bended; wherein
a substrate positioned on bottom of the first display panel and/or
the second display panel is flexible substrate; wherein the first
display panel is organic-light-emitting display panel, which
comprises a substrate, an organic light emitting layer positioned
on the substrate, and a package layer for packaging the organic
light emitting layer on surface of the substrate; wherein the end
of the second display panel which adjacent to the first display
panel is backwardly bended away display surface at boundary between
the display region and the non-display region, and the non-display
region of the first display panel and the non-display region of the
second display panel are facing and correspondingly fixed to each
other after respectively bended; wherein the spliced display device
further comprises a conductive element, two bending parts of the
substrates of the display panels are corresponding to each other
and respectively has a first bound part, the conductive element is
connected between the two adjacent first bound parts of the
substrates.
2. The spliced display device according to claim 1, wherein the
spliced display device further comprises a second bound part
positioned away splicing portion on the substrate of periphery of
the display panel, the conductive element is positioned between
same rows or same columns of the display panels.
3. The spliced display device according to claim 2, wherein the
second bound part is positioned on two adjacent lateral sides of
the spliced display device.
4. A spliced display device, comprising a plurality of display
panels stitched to each other, and each of the display panels has a
display region and a non-display region; wherein the spliced
display device comprises at least one first display panel and at
least one second display panel, an end of the first display is
backwardly bended away display surface at a boundary between the
display region and the non-display region, and an end of the second
display panel is adjacent to the first display panel, and the end
of the second display panel facing and correspondingly fixed to the
non-display region of the first display panel after bended; wherein
a substrate positioned on bottom of the first display panel and/or
the second display panel is flexible substrate; wherein the first
display panel is organic-light-emitting display panel, which
comprises a substrate, an organic light emitting layer positioned
on the substrate, and a package layer for packaging the organic
light emitting layer on surface of the substrate; wherein the
organic light emitting layer is positioned in the display region of
the first display panel, the end of the second display panel is
facing to the bended package layer of the first display panel;
wherein the end of the second display panel which adjacent to the
first display panel is backwardly bended away display surface at
boundary between the display region and the non-display region, and
the non-display region of the first display panel and the
non-display region of the second display panel are facing and
correspondingly fixed to each other after respectively been bended;
wherein the spliced display device further comprises a conductive
element, two bending parts of the substrates of the display panels
are corresponding to each other and respectively has a first bound
part, the conductive element is connected between the two adjacent
first bound parts of the substrates.
5. The spliced display device according to claim 4, wherein the
spliced display device further comprises a second bound part
positioned away splicing portion on the substrate of periphery of
the display panel, the conductive element is positioned between
same rows or same columns of the display panels.
6. The spliced display device according to claim 5, wherein the
second bound part is positioned on two adjacent lateral sides of
the spliced display device.
7. A spliced display device, comprising a plurality of display
panels stitched to each other, and each of the display panels has a
display region and a non-display region; wherein the spliced
display device comprises at least one first display panel and at
least one second display panel, an end of the first display is
backwardly bended away display surface at a boundary between the
display region and the non-display region, and an end of the second
display panel is adjacent to the first display panel, and the end
of the second display panel facing and correspondingly fixed to the
non-display region of the first display panel after bended; wherein
a substrate positioned on bottom of the first display panel and/or
the second display panel is flexible substrate; wherein the first
display panel is organic-light-emitting display panel, which
comprises a substrate, an organic light emitting layer positioned
on the substrate, and a package layer for packaging the organic
light emitting layer on surface of the substrate; wherein the
organic light emitting layer is positioned in the display region of
the first display panel, the end of the second display panel is
facing to the bended package layer of the first display panel;
wherein adherence area between the package layers of a bending
parts of the first display panels is greater than area of a
non-bending part of the first display panel; wherein the end of the
second display panel which adjacent to the first display panel is
backwardly bended away display surface at boundary between the
display region and the non-display region, and the non-display
region of the first display panel and the non-display region of the
second display panel are facing and correspondingly fixed to each
other after respectively been bended; wherein the spliced display
device further comprises a conductive element, two bending parts of
the substrates of the display panels are corresponding to each
other and respectively has a first bound part, the conductive
element is connected between the two adjacent first bound parts of
the substrates.
8. The spliced display device according to claim 7, wherein the
spliced display device further comprises a second bound part
positioned away splicing portion on the substrate of periphery of
the display panel, the conductive element is positioned between
same rows or same columns of the display panels.
9. The spliced display device according to claim 8, wherein the
second bound part is positioned on two adjacent lateral sides of
the spliced display device.
Description
RELATED APPLICATIONS
The present application is a National Phase of International
Application Number PCT/CN2017/117236, filed Dec. 19, 2017, and
claims the priority of China Application 201711035118.8, filed Oct.
30, 2017.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The disclosure relates to a spliced display technical field, and
more particularly to a spliced display device.
2. The Related Arts
With the rapid development of large scale LCD (Liquid Crystal
Display)/AMOLED (Active-matrix organic light emitting diode)
industry, the LCD/AMOLED gradually becomes the trend of display
technology due to its many advantages such as ultra-thin, light
weight, radiation less, stable performance or the like. Currently,
large scale LCD/AMOLED could be manufactured for 60 inches to 100
inches, but it still hardly satisfy the special requirements (for
example, monitoring and dispatching), and it is difficult to ensure
the yield of the super large scale LCD/AMOLED panel.
Because of the requirement of surrounding circuit layout, sealant,
package design and so on in the existing LCD/AMOLED display, there
inevitably appears the region cannot be displayed which around the
display image. The non-display region is called the frame, and the
image will be separated by frame during splicing, and destroyed the
continuity and completeness of the image, which is seriously
affected of splicing efficacy.
SUMMARY
A technical problem to be solved by the disclosure is to provide a
spliced display device has relatively narrow splicing gap for
ensure continuity and integrity of the image display
An objective of the disclosure is achieved by following
embodiments. In particular, a spliced display device includes a
plurality of display panel.
The spliced display device comprising a plurality of display panels
stitched to each other, and each of the display panels has a
display region and a non-display region. The spliced display device
comprises at least one first display panel and at least one second
display panel, an end of the first display is backwardly bended
away display surface at a boundary between the display region and
the non-display region, and an end of the second display panel is
adjacent to the first display panel, and the end of the second
display panel facing and correspondingly fixed to the non-display
region of the first display panel after been bended.
In an embodiment, a substrate positioned on bottom of the first
display panel and/or the second display panel is flexible
substrate.
In an embodiment, the first display panel is organic-light-emitting
display panel, which comprises a substrate, an organic light
emitting layer positioned on the substrate, and a package layer for
packaging the organic light emitting layer on surface of the
substrate.
In an embodiment, the organic light emitting layer is positioned in
the display region of the first display panel; the end of the
second display panel is facing to the bended package layer of the
first display panel.
In an embodiment, adherence area between the package layers of a
bending parts of the first display panels is greater than area of a
non-bending part of the first display panel.
In an embodiment, the end of the second display panel which
adjacent to the first display panel is backwardly bended away
display surface at boundary between the display region and the
non-display region, and the non-display region of the first display
panel and the non-display region of the second display panel are
facing and correspondingly fixed to each other after respectively
bended.
Or, the display region of the second display panel is coplanar with
the non-display region of the second display panel, the non-display
region of the end of the first display panel is formed a step part
after been bended twice, and the second display panel mating to the
step part and the end of the second display panel is facing to a
sidewall of the step part.
In an embodiment, the spliced display device further comprises a
conductive element, two bending parts of the substrates of the
display panels are corresponding to each other and respectively has
a first bound part, the conductive element is connected between the
two adjacent first bound parts of the substrates.
In an embodiment, the spliced display device further comprises a
second bound part positioned away splicing portion on the substrate
of periphery of the display panel, the conductive element is
positioned between same rows or same columns of the display
panels.
In an embodiment, the second bound part is positioned on two
adjacent lateral sides of the spliced display device.
The spliced display device in the present invention provides at
least one non-display region is bended and stitched to other
display panel. It closing the distant between the display regions
of two adjacent display panels, and achieves to narrow down or even
eliminates seam of the spliced display device, and improve sense of
segmental image vision.
BRIEF DESCRIPTION OF THE DRAWINGS
Accompanying drawings are for providing further understanding of
embodiments of the disclosure. The drawings form a part of the
disclosure and are for illustrating the principle of the
embodiments of the disclosure along with the literal description.
Apparently, the drawings in the description below are merely some
embodiments of the disclosure, a person skilled in the art can
obtain other drawings according to these drawings without creative
efforts. In the figures:
FIG. 1 is a result view of a spliced display device to an first
embodiment of the disclosure;
FIG. 2 is a splicing state schematic view of a display panel
according to the first embodiment of the disclosure;
FIG. 3 is a structural schematic view of the display panel of the
FIG. 2 before bended;
FIG. 4 is a splicing state schematic view of another display panel
according to the first embodiment of the disclosure;
FIG. 5 is a structural schematic view of the display panel of the
FIG. 4 before bended;
FIG. 6a is a splicing state schematic view of a display panel
according to a second embodiment of the disclosure;
FIG. 6b is a splicing state schematic view of another display panel
according to the second embodiment of the disclosure;
FIG. 7 is a splicing state schematic view of a display panel
according to the a embodiment of the disclosure;
FIG. 8 is a splicing state schematic view of another display panel
according to the third embodiment of the disclosure;
FIG. 9 is a backside structural schematic view of a first kind of
spliced display device according to the third embodiment of the
disclosure;
FIG. 10 is a front structural schematic view of a first kind of
spliced display device according to the third embodiment of the
disclosure;
FIG. 11 is a backside structural schematic view of a second kind of
spliced display device according to the third embodiment of the
disclosure; and
FIG. 12 is a backside structural schematic view of a third kind of
spliced display device according to the third embodiment of the
disclosure.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
In the description of the disclosure, terms such as "center",
"transverse", "above", "below", "left", "right", "vertical",
"horizontal", "top", "bottom", "inside", "outside", etc. for
indicating orientations or positional relationships refer to
orientations or positional relationships as shown in the drawings;
the terms are for the purpose of illustrating the disclosure and
simplifying the description rather than indicating or implying the
device or element must have a certain orientation and be structured
or operated by the certain orientation, and therefore cannot be
regarded as limitation with respect to the disclosure.
Further, some of the terms above may be used in addition to the
orientation or positional relationship represent, may also be used
to indicate other meanings, such as "on" in some cases the term may
also be used to express some dependency or connection relationship.
For those of ordinary skill in the art, the meaning of these terms
will be understood in the present invention depending on the
circumstances.
The specific structural and functional details disclosed herein are
only representative and are intended for describing exemplary
embodiments of the disclosure. However, the disclosure can be
embodied in many forms of substitution, and should not be
interpreted as merely limited to the embodiments described
herein.
Embodiment 1
Please refer to FIG. 1 to FIG. 3. The spliced display device of the
embodiment comprising a plurality of display panel 10 stitched to
each other, and each of the display panel has a display region A
and a non-display region B. All of the display regions A of the
display panel are coplanar after the display panel stitching to
each other. The spliced display device comprises at least one first
display panel 11 and at least one second display panel 12. An end
of the first display 11 is backwardly bended away a display surface
at boundary between the display region A and the non-display region
B, and an end of the second display panel 12 is adjacent to the
first display panel 11, and an end of the second display panel 12
is facing and correspondingly fixed to the non-display region B of
the first display panel 11 after been bended.
Because of at least one non-display region of display panel is
bended and stitched to other display panel, it closing distance
between the display regions of two adjacent display panels. It can
achieve to narrow down or even eliminates seam of the display
panel, and improve sense of segmental image vision.
For convenience of description, in this embodiment, all of display
panel is OLED (organic-light-emitting) display panel as an example.
It can be realized that the display panel 10 also could be a
non-flexible display panel stitched to a flexible display
panel.
Please refer to FIG. 2 and FIG. 3. FIG. 2 is a cross sectional view
of a-a direction shown in FIG. 1. FIG. 3 is a structural schematic
view of a first display device panel 11 before bending. The first
display panel 11 comprises a substrate 111, an organic light
emitting layer 112 positioned on the substrate 111, and a package
layer 113 for packaging the organic light emitting layer 112 on
surface of the substrate 111. It could be realized, inner structure
of the first display panel 11 is not be limited to above
description, for example further comprises anode, cathode and so
on. In the FIG. 2, even though the organic light emitting layer 112
of the display panel in the bending portion is positioned under the
seam, the width of the organic light emitting layer 112 of the
bending portion is predetermine at this time, such that it not
effects display of the spliced display device. Or, the bending part
has the organic light emitting layer 112 is the non-display region
according to predetermine by driving system, and this portion would
not cause defects or other affection.
In this embodiment, structure of the second display panel 12 as
same as structure of the first display panel 11, which is, an end
of the second display panel 12 which adjacent to the first display
panel 11 is backwardly bended away the display surface at boundary
between the display region A and the non-display region B. And the
non-display region B of the first display panel 11 and the
non-display region B of the second display panel 12 are facing and
correspondingly fixed to each other after respectively bended.
The substrate 111 positioned on bottom of the first display panel
11 and/or the second display panel 12 is flexible substrate, such
that the first display panel 11 and the second display panel 12
could be bended according to requirement. The substrate 111 has
property of high heat resistance and persistence, and made by one
or more of polyethylene terephthalate, Polyethylene
naphthalene-2,6-dicarboxylate, polycarbonate, Polyarylate,
polyetherimide, polyethersulfone and polyimide.
Please refer to FIG. 3. When the first display panel 11 is not
bended, partial edge of the organic light emitting layer 112 is
located in the non-display region B. After the first display panel
11 been bended, the first display panel 11 is stitched to the
second display panel 12, the package layer 113 of bending part of
the first display panel 11 is facing with the package layer 113 of
bending part of the second display panel 12, and then fixed both
together. At this time, width of seam formed by the first display
panel 11 and the second display panel 12 is sum of thickness of the
organic light emitting layer 112 of the first display panel 11,
thickness of the package layer 113 and thickness of the organic
light emitting layer 112 of the second display panel 12, thickness
of the package layer 113.
Please refer to FIG. 4 and FIG. 5. In this embodiment, structure of
display panel is difference to the display panel shown as FIG. 2
and FIG. 3. In this embodiment, the organic light emitting layer
112 is positioned in display region A of the first display panel
11. The bended package layer 13 of the second display panel 12 is
corresponding to the bended package layer 13 of the first display
panel 11 when the first display panel 11 and the second display
panel 12 are bended and stitched to each other. At this time, width
of seam formed by the first display panel 11 and the second display
panel 12 is sum of thickness of the package layer 113 of the first
display panel 11 and thickness of the package layer 113 of the
second display panel 12. Comparing with above embodiment, the width
of seam significantly decreasing. In order to prevent the bending
part damages the contact and adhesion between the package layer 113
and substrate 111 after been bended, the adherence area of the
package layer 113 of bending part of the first display panel is
greater than area of the non-bending part of the first display
panel 11. For example, the width of the adherence 113 of the
package layer 113 of the bending lateral side or the width of the
frame is greater than other portion.
Embodiment 2
Please refer to FIG. 6a and FIG. 6b, the differences between with
the embodiment 1 will be explained below. The second display panel
12 in this embodiment, the display region A is coplanar with the
non-display region B. The non-display region B of an end of the
first display panel 11 is formed a step part after been bended
twice; the second display panel 12 is mating to the step part and
the end of the second display panel 12 facing to a sidewall of the
step part. Comparing with the first embodiment, this embodiment
only narrow down gap from the first display panel 11 side.
In this embodiment, it cloud be applied to the stitching process
for flexible display panel and non-flexible display panel. The
first display panel 11 is a flexible display panel and the second
display panel 12 is a non-flexible display panel, which enhances
diversification of splicing way. In this embodiment, width of seam
formed by the first display panel 11 and the second display panel
12 is sum of thickness of the organic light emitting layer 112 of
the first display panel 11, thickness of the package layer 113, and
width of frame of the second display panel 12.
Embodiment 3
Please refer to FIG. 7 and FIG. 8, the differences between with the
embodiment 1 will be explained below. Based on the embodiment 1,
length of bending parts of substrates 111 of the first display
panel 11 and the second display panel 12 are greater than covering
width of the package layers 113 of the frame portion. The first
display panel 11 is stitched to the second display panel 12, and
the bending parts of the substrates 111 are correspondingly
positioned to each other and respectively have the first bound
parts B1 on the ends. The first bound part B1 bounding a bound
terminal of the signal line which is correspondingly conducting to
scan line, data line, source line, it could use for inputting,
outputting and transferring the signals of the signal line. The
conductive element P is electrically connected between first bound
terminals B1 of two adjacent substrates 111 for transporting
display signal. The conductive element P is anisotropic conductive
adhesive, only conducting for Z-axis direction which is thickness
direction of conductive element P and avoiding short circuit
between different terminals.
It could reduces number of signal input terminal of the spliced
display device and simplify circuit of the spliced display panel by
using anisotropic conductive adhesive for conducting signal
terminal between display panel 10.
Please refer to FIG. 9 and FIG. 10. In this embodiment, the
conductive element P is connected between the two adjacent display
panels 10 for connecting the first bound parts B1 of two adjacent
display panels 10. The spliced display device further comprises a
second bound part B2 is positioned away splicing portion on the
substrate 111 of periphery of the display panel 10, and second
bound part B2 is positioned on two adjacent lateral sides of the
spliced display device. The upper side second bound part B2 is used
for data signal driver terminal and the left side second bound part
B2 is used for scan signal driver terminal. The sizes of pixels are
designed to the same or similar by design the same resolution for
all panels. The second bound part B2 in horizontal direction is a
scan signal driver, and same row of the display panel 10 in
horizontal direction has same number of scan lines and share with
scan drive signal, the scan lines are respectively corresponding
and connected with the conductive element P in the same row display
panel 10. The second bound part B2 in vertical direction is a data
signal driver, and same column of the display panel 10 in vertical
direction has same number of data lines and share with data drive
signal, the data lines are respectively corresponding and connected
with the conductive element P. The spliced display device could
provide a whole display panel after stitched to each other. When
inputting the data driver signal and the scan drive signal,
sequentially driving from the up to down or from the down to up in
a frame image, and the display panels 10 in same row are
simultaneously be drive.
Please refer to FIG. 11, the second bound part B2 also could be
positioned only on one side of spliced display device. For example,
the second bound part is positioned on the upper side of the
drawing, a integrate driver chip is positioned on the same side of
the spliced display device, it could control to input and stop the
signal form scan line, data line at the same time, which could also
to narrow the edge frame of the spliced display device.
Please refer to FIG. 12. In this embodiment, the second bound part
B2 is only positioned on one side of the spliced display device,
and positioning conductive element P which connecting the first
bound parts B1 of two display panel 10 between two display panels
10 only in vertical direction, at the same time the second bond
part B2 is integrate driver chip, it could control to input and
stop the signal form scan line, data line at the same time. It
cause the same column of display panels 10 share with same signal
inputting and the second bound part B2 in vertical direction, and
the same row of display panels 10 are respectively using different
scan drive signals. When inputting the data drive signal and the
scan drive signal, the displays and drives will be together in the
same column of display panels 10, and the displays and drives will
be individual in different columns of display panels 10.
The spliced display device in the present invention, which provides
at least one non-display region been bended and stitched to other
display panel. It closing the distant between the display regions
of two adjacent display panel, and it can achieve to narrow down or
even eliminates seam of the spliced display device, and improve
sense of segmental image vision. Simultaneously, It could reduces
number of signal input terminals of the spliced display device and
integrated circuit, and simplify circuit of the spliced display
panel by using the anisotropic conductive adhesive electrically
connecting the bound parts between display panel.
The foregoing contents are detailed description of the disclosure
in conjunction with specific preferred embodiments and concrete
embodiments of the disclosure are not limited to these description.
For the person skilled in the art of the disclosure, without
departing from the concept of the disclosure, simple deductions or
substitutions can be made and should be included in the protection
scope of the application.
* * * * *